d) What is the probability that X is greater than its expected value? e) What is the probability that X is> 5? f) What is the probability that X is> 10? |
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- What is the probability that a stuent participates in more than two activities?If the probability of an event occurring P(E) plus the probability of an event not occurring P(not E) equals 1, then define the probability of P (not E)Use the probability distribution to find the probabilities of obtaining1)A sum of 8 or 11.2)A sum that is greater than 8.3)A sum that is greater than 5 but less than or equal to 10.
- I think I've figured out a) so I only need the restRock noise in an underground mine occurs at an average rate of two per hour.a) Find the probability that at least one rock noise will be recorded for 15 minutes.b) Find the probability that the time until the next noise is after 20 minutes.c) From (a), determine the interval of time (in minute) such that the probability of the firstrock noise to occur is 0.9.d) The last noise detected was at 9.35 pm. It is now 9.55 pm. What is the probability thatthe next noise detected after 10.15 pm?According to a survey, the probability that a randomly selected worker primarily drives a motorcycle to work is 0.755. The probability that a randomly selected worker primarily takes public transportation to work is 0.088. Complete parts (a) through (d). (a) What is the probability that a randomly selected worker primarily drives a motorcycle or takes public transportation to work? P(worker drives a motorcycle or takes public transportation to work) = (Type an integer or decimal rounded to three decimal places as needed.) (b) What is the probability that a randomly selected worker primarily neither drives a motorcycle nor takes public transportation to work? P(worker neither drives a motorcycle nor takes public transportation to work) = (Type an integer or decimal rounded to three decimal places as needed.) (c) What is the probability that a randomly selected worker primarily does not drive a motorcycle to work? P(worker does not drive a motorcycle to work) = (Type an integer or…
- Let X be a random variable with u = 4 and o = .5. (a) Use the Chebychev inequality to estimate Pr(3 < X < 5). %3D (b) If X were normally distributed, what would beThe probability that a student pilot passes the written test for a private pilot's license is 0.7. a) Find the probability that a given student will pass the test: i. On the third try ii. Before the fourth try iii. At the fifth after seventh try b) What is the mean and variance of the number of trial that the student must take if he/she want to pass with five trial?What is the probability that X equal 2?